Tractor spade plow



Aug. 30, 1932. LEWIS Y 1,814,7

TRACTOR SPADE PLOW Filed June 15, 1951 5 Sheets-Sheet l Awe/7701' Gary A Zen As g-3 1932- G. H. LEWIS 4 1,874,768

TRACTOR SPADE PLOW Filed June 15, 1931 3 Sheets-Sheet 2 lnre/r for 55 gorgefl L V 5 7- /777 M lllli lll 13 M G. H. LEWIS 1,874,768

.Filed June 15, 1931 3 Sheets-Sheet 3 Patented Aug. 30, 1932 'N E: AT -5 PQRTLAND, onneoiv emer es srAnni now' Application filed June 15,

VMyinvention relates to plows, cultivators,

and other ground tilling'implements. The

device is used to thoroughly agitate and aerate the cultivated. 1 a a The invention is primarily adapted for use in conjunction with wheeled tractors. A ph -1 rality of shovel blades extend outwardly from therimwheel of the tractor, and a comprjessible member is disposed between the respective shovel blades that traps the soil between the respective shovel blades until a predeterr mined'position is reached in the line of travel of the shovel blade at which time the'trapped rear of the tractor.

and aerate the top surface of the ground a oftliis descmp-t onmy dev1ce'1 s-shownmount-.

material isforcibly released from between the hladesand is agitated] and aerated during the release. p

a The invention primarily consists of a wheel supported, power driven, or animal drawn wheeledvehicle to which. my a-ttachmentis fixed and which has means'for predetermina ing the precise depth towhich the cultivation is to be'made effective and to simultaneously completelybreak up the surface ofthesoil and carry and redistribute the same at the Provision is made to cultivate parallelly' disposed strips with a space being left .therebetween that is recon ditioned at the next round of the vehicle; Settable means are'provided for predetermining the depth at which the till-ing is to be made effective andfor also predetermining at what point the material is to be released from the wheels.

One of the objects of myinvention is vide a tilling machine that will'thoroughly, completely and uniformly plow, cultivate, till ground to be plowed, tilled, or.

1931. --ser1a1-- np.-t44,sse.

iurtherlobject of my invention con-J s' sts n providing a tilling machine that will be e fective and eificient in its operation.

enonenngmwlsorxnnr, oizneoli, ASSIGNOB or ownair To ream: wnirnaston- I With these and incidental objects in V ew,

the invent on onsists in Certain novel. featu es of construction and com i a o of pa tathe essen al element of h h wa e Fig- 3 fragmen a y; se ti al top p an viewof the mechanism illustrated ,in Fig. 2;. i Bigi a se ional pl n V ew ofthe r tor Whee to. whi e shov l. mem rs a taeh dthe semebeing ta en nllin 7 of Fig. ;1, looking in thedirection indicated 3 v Fig. 5 a fragmentary, sectional sideview otthe shov portion out the t act Whe illu'stratingthe same in. position :for tilling n e -releesi'ng theeultivated material from t reetorw ela i :j I a a Y Likereierence characters refe'rtolike parts h o gh u th i ev ialvv e s- 1 -I have here shown-my ,device attached to an engine driven tractor, but I; do notwish to be limit to p w tte te s as he a esusceptible of used with animal draft tractors with equal facility. For the purpose ed upon a power driven tractor, of which the chassis ;isillustrated a at l. Front steering wheels 2 are mounted upon the front end of the tractor. "The tractor is" powered by a gasoline power operated prime mover not h sh wn, but bei g disp e neathi h hood 3,. -A-rimgi is adapted to theaxle 5 by a y i a leconnecting m an and a "s cond; 'ary rim, Qlhilb 6 is provided between the prime y im Land the-Ihub 5. A; plurality of spaced ho e m mber i'l. are remo b y sc 7 primary rim.

cured to the primary rim 4. This may be 7 V 7 best accomplished by placing of shims 8 upon the outer peripheral surface of'the primary rim and having suitable fastening means 9 passing through the base flange 10 of the shovel members and through the shims 8. I

compressible head 11 is disposed'between eachof the adjacent shovel blades.- The compressible head is mounted upon a shaft 12. The shaft is adapted for being ,,passe 1;

through an opening 13 disposed within the 'upon' the shaft 12 and a compressible member, as a coil spring 15, is-Qdisposed"about:

thev stem 16 of the shaft 12. The stem-16 passes through an opening 17 disposed in registerable alignment with the opening 13 disposed Within the primary rim. The open in'g-17 is disposed within the secondary rim.

= 'As the sh'ovel point engages the surfaceof the earth to beftilled the compressible head 11 is pushed downward andbetween the shovel members. The depthat whichthe plowing,

' or ti'llingjisto occur may be predetermined by placing a splitcollar 19 aboutthe shaft 12 and between the compressible head and the outer surface of the primary tractor wheel; Aplurality of spaced shoulder stops'21 are disposed uponone side of eachiof the stems,and a pawl 22'isdisposed in registry with the V shoulderstops and is adapted to engage the same and to maintain'the com- 1 pressiblehead-locke'dagainst the reacting in the housing blading 31, and a crank 32 is the pawl carrying'shaft 24. 'The pin 30 is element until released. The purpose of the arrangement is to maintain a slug of earth' 23' between the respective shovel membersand to carry the same around until released. The point of release ispredetermined by the character of the soil being plowed,'or

cultivated and the amount'of agitation-that may be required in releasing the same from between the respective'shovel members.

7 A shaft 24 illustrated in Fig. 1,- is disposed transversely of the wheel member and-is supported within the respective housings 25 and 26. Each ofthe compressible" heads is adapted for being engaged, supportedand locked by more than one locking pawl here shown as two in number. The locking pawl 22 is fixedly securedtothe shaft 2 1. "The other locking pawl 28, is rockably disposed. upon the shaft 24; and is adapted for being I urged toward the 'stem of the compressible I headby a reacting'element, as a coil spring,

29. An adjustable pin is positionedwithremovably disposed upon'the inner" end of disposed inthe line of travel of thevcrank and. when the predetermined position is reached, where 'the slug of material is to be released between the shovel members, the pawls are released from the stems and the reacting element 15I eauses' the"compressible headto be returned tonormal position, and

A set collar 14 is mounted or. homogeneous material, the shield will remain intact, but in reverse position in which it is normally found. 'In relatively loose material the agitationwill be complete and the surface will be left suitable for sowing,or other crop reception without addi tional cultivation. Theadjust'able shield '33 is secured toa shaft 35. The shaft is journaled within suitable journa1-blocks36 that are mounted upon the frame member 37 0f the tractor. .A lever38 is also mounted upon i the shaft 35. A link39 connects the lever 38' with an operating lever 40. The operating 1 lever40 is adapted for operatingin conjnnc tion with a quadrant 4:1 to thereby set and position the shield 33 to the desired angle and distance from. the compressible heads The adjustable stop pin 30 is adapted for being actuated in an arc uateslot 42,andfor being positioned by a lever 43 to one armr l' l of which the adjustablepin 30 is secured-2w The actuating lever 43' has a locking lp awl .45 associated therewith thatis adapted for be? ingmanipulated by. the. dj t il v ver 46. Thepawl is adapted for bein p tioned within notches 47. that are. disposed upon the outer surface of the. quadrant 48 A .colter 49 is disposed atone or eithersideof the. primary rim and at one, orboth ends-of. the shovel members tocut the surface to be plowed. Infallow ground thesecolters may be removed, but in soddymateri'al they are essential.

While the form of mechanism herein- 7 shown anddescribedis admirably adapted to fulfill the 'objects primarily stated, it is to. be understood that it is not :intended'to confine the invention tothe' one form of'em bodiment herein shown and described as it is susceptible of embodiment in various forms, all coming withinthe scope of the claims which-follow.- I What I'lclaimis:

1. In a device of-the classdescribedpthe combination of a plow frame, wheel; sup-" ports for the plow frame, primary and secondary rims spaced apart and forming the driving wheels, shovelmembers spaced apart compressible heads disposed between the shovel members, 7 shafts extending" through the rim members and having the compres and removably secured to the primaryrims,

sible heads secured thereto upon'their outer ends, means for limiting thedistance that; the compressible heads are permittedtomove' toward the primary rimsand the depth the shovels will be permitted to enterthe ground, reacting elements disposed about the shafts, means for locking the shovel supporting shafts when the heads are compressed, adjustable means for unlocking the shafts and for releasing the shovel at a predetermined position in the line of rotation of the driving wheels and an adjustable shield disposed in the line of release of the compressible head. I

2. In a device of the class described, the combination of a chassis, wheel supports for the chassis, shovel members spaced apart and adjustably secured to the rims of the wheel sup orts, compressible heads disposed between tlie shovel members and adapted to release'the earth trapped between the shovel members at a settable position within the line of travel of the wheel supported shovel members, means for limiting the depth of penetration of the shovel members, and an adjustable shield disposed in the path of the earth released from between theshovel members.

3. In a device of the class described, the V combination of a wheel supported chassis, shovel members removably secured to the rims of the wheels, means disposed between the shovel members and adapted for being compressed when the shovel members-penetrate the earth to be tilled, means for releasing the compressible members for releasing the earth carried between the shovel members at 'a settable point and an adjustable shield disposed in the path of release of the materials carried between the shovel members.

4. In a device of the class described, in

combination with a tractor, of primary and secondary rims, spaced apart and adapted for being driven by the driving axle of the tractor, shovel members spaced apart and removably secured to the primary rim, movable members disposed between the shovel members, reacting elements associated with the movable members, and'means for locking 5 the movable members when depressed between the shovel members, and means for releasing the movable members at a predetermined position. 7

5. In a device of theclass described, in

combination with a tractor, comprising primary and secondary rims, spaced apart and adapted for being driven by the driving axle of the tractor, shovel members spaced apart and adjustably secured to the primary rim, compressed heads disposed between the shovel members, and adapted for being repressed between the blades when the shovel members are made to penetrate the earth to be plowed, reactlng elements for returng ing the compression heads to normal position, means for locking the a compression heads in repressed position, and adjustable means for unlocking the compression heads at a predetermined position.

6. In a device of the class described, the

combination of a tractor, wheel, shovel mem= bers spaced apart and removably secured to the tractor wheel, compressible heads disposed between the shovel members and adapted for being moved toward and away from the center of rotation of the tractor wheel, means for locking the compressible GEORGE H. LEWIS.

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